He would live to glorify God.

Genesis 39:5 From the time he put him in charge of his household and of all that he owned, the LORD blessed the household of the Egyptian because of Joseph. The blessing of the LORD was on everything Potiphar had, both in the house and in the field. 6 So Potiphar left everything he had in Joseph’s care; with Joseph in charge, he did not concern himself with anything except the food he ate.

Genesis 39: 20 Joseph’s master took him and put him in prison, the place where the king’s prisoners were confined. But while Joseph was there in the prison, 21 the LORD was with him; he showed him kindness and granted him favor in the eyes of the prison warden. 22 So the warden put Joseph in charge of all those held in the prison, and he was made responsible for all that was done there. 23 The warden paid no attention to anything under Joseph’s care, because the LORD was with Joseph and gave him success in whatever he did.

Gen 41:14 So Pharaoh sent for Joseph, and he was quickly brought from the dungeon. When he had shaved and changed his clothes, he came before Pharaoh.
15 Pharaoh said to Joseph, “I had a dream, and no one can interpret it. But I have heard it said of you that when you hear a dream you can interpret it.” 16 “I cannot do it,” Joseph replied to Pharaoh, “but God will give Pharaoh the answer he desires.”

Genesis 45:8 “So then, it was not you who sent me here, but God…”

We must decide ahead of time how we will live our lives.
We must persevere during hardship.
We must hold onto hope.